code: def __init__(
      self,
      feed,
      brk,
      instrument,
      vwapWindowSize,
      buyThreshold,
      sellThreshold,
  ):
      super(VWAPMomentum, self).__init__(feed, brk)
      self.__instrument = instrument
      self.__vwap = vwap.VWAP(feed[instrument], vwapWindowSize)
      self.__buyThreshold = buyThreshold
      self.__sellThreshold = sellThreshold
  
file_path: pyalgotrade/samples/bccharts_example_2.py
imports: from pyalgotrade import bar
  from pyalgotrade import strategy
  from pyalgotrade import plotter
  from pyalgotrade.technical import vwap
  from pyalgotrade.barfeed import csvfeed
  from pyalgotrade.bitstamp import broker
  from pyalgotrade import broker
label_desc: Use image node_id 1 to create a new VWAPMomentum object from inherited base classes: strategy with example: obj = VWAPMomentum(feed, brk, instrument, vwapWindowSize, buyThreshold, sellThreshold)